Lean red meats, including beef, pork and lamb, can play an important part in a healthy balanced diet as they have a high nutrient density. This means that they contain a wide variety of nutrients in a relatively small amount of food.Meat is a major source of protein.
The olfactory epithelium is a specialized epithelial tissue inside the nasal cavity that is involved in smell. In humans, it measures about 9 cm 2 (3 centimeters by 3 centimeters) and lies on the roof of the nasal cavity about 7 cm above and behind the nostrils.
Olfactory epithelium consists of four distinct cell types: 1  Olfactory sensory neurons. 2  Supporting cells. 3  Basal cells. 4  Brush cells.